Qt 4.8
qatomic_generic_unix.cpp
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41 
42 #if !defined(Q_OS_SYMBIAN) || (defined(Q_OS_SYMBIAN) && !defined(Q_CC_RVCT))
43 
44 #include "qplatformdefs.h"
45 
46 #include <QtCore/qatomic.h>
47 
49 static pthread_mutex_t qAtomicMutex = PTHREAD_MUTEX_INITIALIZER;
50 
52 bool QBasicAtomicInt_testAndSetOrdered(volatile int *_q_value, int expectedValue, int newValue)
53 {
54  bool returnValue = false;
55  pthread_mutex_lock(&qAtomicMutex);
56  if (*_q_value == expectedValue) {
57  *_q_value = newValue;
58  returnValue = true;
59  }
60  pthread_mutex_unlock(&qAtomicMutex);
61  return returnValue;
62 }
63 
65 int QBasicAtomicInt_fetchAndStoreOrdered(volatile int *_q_value, int newValue)
66 {
67  int returnValue;
68  pthread_mutex_lock(&qAtomicMutex);
69  returnValue = *_q_value;
70  *_q_value = newValue;
71  pthread_mutex_unlock(&qAtomicMutex);
72  return returnValue;
73 }
74 
76 int QBasicAtomicInt_fetchAndAddOrdered(volatile int *_q_value, int valueToAdd)
77 {
78  int returnValue;
79  pthread_mutex_lock(&qAtomicMutex);
80  returnValue = *_q_value;
81  *_q_value += valueToAdd;
82  pthread_mutex_unlock(&qAtomicMutex);
83  return returnValue;
84 }
85 
87 bool QBasicAtomicPointer_testAndSetOrdered(void * volatile *_q_value,
88  void *expectedValue,
89  void *newValue)
90 {
91  bool returnValue = false;
92  pthread_mutex_lock(&qAtomicMutex);
93  if (*_q_value == expectedValue) {
94  *_q_value = newValue;
95  returnValue = true;
96  }
97  pthread_mutex_unlock(&qAtomicMutex);
98  return returnValue;
99 }
100 
102 void *QBasicAtomicPointer_fetchAndStoreOrdered(void * volatile *_q_value, void *newValue)
103 {
104  void *returnValue;
105  pthread_mutex_lock(&qAtomicMutex);
106  returnValue = *_q_value;
107  *_q_value = newValue;
108  pthread_mutex_unlock(&qAtomicMutex);
109  return returnValue;
110 }
111 
113 void *QBasicAtomicPointer_fetchAndAddOrdered(void * volatile *_q_value, qptrdiff valueToAdd)
114 {
115  void *returnValue;
116  pthread_mutex_lock(&qAtomicMutex);
117  returnValue = *_q_value;
118  *_q_value = reinterpret_cast<char *>(returnValue) + valueToAdd;
119  pthread_mutex_unlock(&qAtomicMutex);
120  return returnValue;
121 }
123 #endif
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
Q_CORE_EXPORT void * QBasicAtomicPointer_fetchAndAddOrdered(void *volatile *_q_value, qptrdiff valueToAdd)
Q_CORE_EXPORT int QBasicAtomicInt_fetchAndAddOrdered(volatile int *_q_value, int valueToAdd)
Q_CORE_EXPORT bool QBasicAtomicInt_testAndSetOrdered(volatile int *_q_value, int expectedValue, int newValue)
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
QIntegerForSizeof< void * >::Signed qptrdiff
Definition: qglobal.h:987
Q_CORE_EXPORT bool QBasicAtomicPointer_testAndSetOrdered(void *volatile *_q_value, void *expectedValue, void *newValue)
#define Q_CORE_EXPORT
Definition: qglobal.h:1449
static pthread_mutex_t qAtomicMutex
Q_CORE_EXPORT int QBasicAtomicInt_fetchAndStoreOrdered(volatile int *_q_value, int newValue)
Q_CORE_EXPORT void * QBasicAtomicPointer_fetchAndStoreOrdered(void *volatile *_q_value, void *newValue)